A down on his luck engineer gets involved in an adventure with a mysterious woman and an emerald magnate.

Jewel thieves attempt to recover treasure from piranha infested waters. Mistrust and betrayals happen amongst the gang in the quest for gold.

To obtain a supply of a rare mineral, a ship raising operation is conducted for the only known source, the Titanic.

Roy Tucker, a Vietnam war veteran with excellent shooting skills, is serving a long prison sentence when a mysterious visitor promises him that he will be released if he agrees to carry out a dangerous assignment.

When the young Texas Ranger, John Reid, is the sole survivor of an ambush arranged by the militaristic outlaw leader, Butch Cavendich, he is rescued by an old childhood Comanche friend, Tonto. When he recovers from his wounds, he dedicates his life to fighting the evil that Cavendich represents. To this end, John Reid becomes the great masked western hero, The Lone Ranger. With the help of Tonto, the pair go to rescue President Grant when Cavendich takes him hostage.